Do I still need to register my research with RGAO even if it will not undergo UPMREB/IACUC review?

Yes, all researches conducted/ to be conducted in the University and/or by University staff (including faculty, students, REPS, and PGH employees, residents/ fellows) should be registered. These include all research regardless of area or topic, design or methodology, or funding source (e.g. case reports, meta-analysis, systematic review, creative work).